• Periods
• Groups

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

A neutron has a charge of

• +2
• No charge
• -1
• +1

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

Tags

NGSS.MS-PS1-1

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

How many protons are in Beryllium?

• 4
• 9
• 5
• 2

Tags

NGSS.MS-PS1-1

What is the chemical symbol for Lithium?

• H
• He
• Li
• N

Tags

NGSS.MS-PS1-1

Each element is, usually, given one or two letters known as a chemical symbol.

• True
• False

All matter is made of

• atoms
• cells

Tags

NGSS.MS-PS1-1

A nucleus of an atom contains what two parts?

• Electrons and Protons

• Neutrons and Electrons

• Protons and Neutrons

Tags

NGSS.MS-PS1-1